﻿#region Copyright notice and license

// Copyright 2019 The gRPC Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#endregion

#if SUPPORT_LOAD_BALANCING
using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;

namespace Grpc.Net.Client.Balancer.Internal
{
    internal class BalancerAddressEqualityComparer : IEqualityComparer<BalancerAddress>
    {
        internal static readonly BalancerAddressEqualityComparer Instance = new BalancerAddressEqualityComparer();

        public bool Equals(BalancerAddress? x, BalancerAddress? y)
        {
            if (ReferenceEquals(x, y))
            {
                return true;
            }

            if (x == null || y == null)
            {
                return false;
            }

            if (!x.EndPoint.Equals(y.EndPoint))
            {
                return false;
            }

            return true;
        }

        public int GetHashCode([DisallowNull] BalancerAddress obj)
        {
            throw new NotSupportedException();
        }
    }
}
#endif
